hi, rogue ninja outburst is a pve event that has not yet been released in the en version. it is NOT training grounds/land of shilian.

training grounds/land of shilian: pvp event, takes place in konoha, rewards sun coins

rogue ninja outburst: pvE event, takes place in wind desert and land of iron. rewards sun coins. in this event, you run to the mentioned locations to attack sealed-ninja-like NPCs in solo or teams. the more "rogue ninjas" u kill, the more sun coins you get. when you lose, you get sent back to konoha, and u have to run/teleport to the location again. the group with the highest kill count gets a discount in the group shop.

in rogue ninja outburst, you're also allowed to kill other players. THIS WILL NOT REWARD U WITH ANYTHING except maybe if u want to feed a grudge or smth lol. but the losing player will be sent back to konoha, and have to run back to the event site. in general, attacking players wastes your time and theirs.